Apublishing industry report predicts that magazine subscriptions will drop
by 10% each year. if this prediction is correct, then how many subscribers
will a magazine with 51,000 subscribers have in 7 years?
if necessary, round your answer to the nearest whole number.

24,393 subscribers

Step-by-step explanation:

This is exponential decay problem. The formula for exponential decay is:

Where

F is the future value (what we are looking for, in 7 years)

P is the present amount (that is 51,000)

r is the rate of decrease per year (r = 10% = 10/100 = 0.1)

t is the time, in years (t = 7)

Now substituting, we get:

Rounding to nearest whole number,

Number of subscribers after 7 years = 24,393 subscribers

(5x-1)^2= (5x)^2-2(5x)×1+(1)^2=25x^2-10x+1

multiply each one by 3.14

step-by-step explanation: